TheLoyale Posted April 12, 2012 Author Share Posted April 12, 2012 when you say 13", is that size of the wheel, or is that the distance from the center hole to the inner lip of the wheel? 13" diameter wheel (Stock size) 13" wide wheels! OMG.... That would be nuts on a Subaru haha. Link to comment Share on other sites More sharing options...
wilcox Posted April 13, 2012 Share Posted April 13, 2012 ok so i understand what back spacing is, but what is offset? and what do you have to look for when picking out a set of wheels to make sure that they wont interfere with brake components? so what im asking is what do i look for to make sure that the surface the lugz go through or the spokes dont rub on the caliper's. ive seen it happen in other custom situations Link to comment Share on other sites More sharing options...
TheLoyale Posted April 13, 2012 Author Share Posted April 13, 2012 Ah, I get what your asking. I don't really have an answer for that. I guess if I were looking at wheels, I'd look at the lug seat/surface and how the spoke would interfere if at all. Somebody else will chime in. Link to comment Share on other sites More sharing options...
wentz912 Posted April 13, 2012 Share Posted April 13, 2012 IMO Offset is another word for Backspacing. (At least thats what I go by) As long as you go bigger then 13", nothing will interfere with the brake system, Calipers, Rotors and or Drums will all clear. Width will be the only issue, may hit the Spring perch or Strut body, Possible rubbing on Tierod end. But you can run a pretty wide tire on these. Incorrect. Offset is the distance from the centerline of the rim of the wheel, to the wheel mounting surface(The surface up against the wheel hub/brake drum when it's mounted.) It's negative when it's closer to the outside lip, and positive when it's closer to the inside. EXAMPLE: My 14x6 Pug alloys have 4.5" of backspace. The centerline of the 6" wheel is 3" across. 3"-4.5"= -1.5" This implies that they also have 1.5" of negative offset. The "real" formula for calculating offset is as follows: (Wheel width/2)-(Backspace)=Offset Link to comment Share on other sites More sharing options...
obk25xt Posted April 13, 2012 Share Posted April 13, 2012 Incorrect. Offset is the distance from the centerline of the rim of the wheel, to the wheel mounting surface(The surface up against the wheel hub/brake drum when it's mounted.) It's negative when it's closer to the outside lip, and positive when it's closer to the inside. EXAMPLE: My 14x6 Pug alloys have 4.5" of backspace. The centerline of the 6" wheel is 3" across. 3"-4.5"= -1.5" This implies that they also have 1.5" of negative offset. The "real" formula for calculating offset is as follows: (Wheel width/2)-(Backspace)=Offset Nice work buddy.... You're such a sexual intellectual..... (effinknowitall) :-p Link to comment Share on other sites More sharing options...
wentz912 Posted April 13, 2012 Share Posted April 13, 2012 Nice work buddy.... You're such a sexual intellectual..... (effinknowitall) :-p Don't hate man. when you going to let me come down and help you work on the beast huh? Plus i gotta give you a list of parts to dig out of the barn! Link to comment Share on other sites More sharing options...
wilcox Posted April 13, 2012 Share Posted April 13, 2012 hey "wentz912" thanks for the information, me and mr. loyal leared something there. so then what is back spacing? Link to comment Share on other sites More sharing options...
wentz912 Posted April 13, 2012 Share Posted April 13, 2012 hey "wentz912" thanks for the information, me and mr. loyal leared something there. so then what is back spacing? Backspace is still just the amount of SPACE from the BACK lip of the wheel to the wheel mounting surface. Link to comment Share on other sites More sharing options...
wilcox Posted April 13, 2012 Share Posted April 13, 2012 so effectivly is back spacing really just offset + other half of the rim. i get it i just dont understand why they need both measurements Link to comment Share on other sites More sharing options...
heartless Posted April 13, 2012 Share Posted April 13, 2012 so effectivly is back spacing really just offset + other half of the rim. i get it i just dont understand why they need both measurements Maybe this will clear it up for you... http://www.streetdreams.org/tech.php Link to comment Share on other sites More sharing options...
TheLoyale Posted April 13, 2012 Author Share Posted April 13, 2012 Ah, I understand that now. Finally got that cleared up after 2yrs! Good posts, thank you. Link to comment Share on other sites More sharing options...
wentz912 Posted April 13, 2012 Share Posted April 13, 2012 so effectivly is back spacing really just offset + other half of the rim. i get it i just dont understand why they need both measurements Yup pretty much. You can get the other number, no matter which one you have. I usually see backspace always measured in inches though, while offset can be either inches or mm. Link to comment Share on other sites More sharing options...
wilcox Posted April 13, 2012 Share Posted April 13, 2012 so then what determines how wide of a wheel you need Link to comment Share on other sites More sharing options...
wentz912 Posted April 13, 2012 Share Posted April 13, 2012 Going to be a wheeler or a DD/ocassional wheeler? Link to comment Share on other sites More sharing options...
wilcox Posted April 13, 2012 Share Posted April 13, 2012 idk probably like a weekend/hunting wheeler. so does the size of the tire have anything to do with the with the width of the rim? Link to comment Share on other sites More sharing options...
wentz912 Posted April 13, 2012 Share Posted April 13, 2012 Yes, you never want the tire size to be narrower than the wheel width. the closer to the wheel width that your tire is, the less "bubble" the tire will have. Link to comment Share on other sites More sharing options...
wilcox Posted April 13, 2012 Share Posted April 13, 2012 so if i put a skinny tire on a wide wheel it wont fit, and if i put a wide tire on a skinny wheel it will bubble. Link to comment Share on other sites More sharing options...
TheLoyale Posted April 13, 2012 Author Share Posted April 13, 2012 so if i put a skinny tire on a wide wheel it wont fit, and if i put a wide tire on a skinny wheel it will bubble. If you put a skinny tire on a wider wheel, it willl bow or pull out the sides, a tire shop will not mount a tire that is to much narrower then the rim, as it is a lot of stress on the bead. You can mount a wider tire on a less wide rim, it will protect the bead lip more if offroading (I see this all the time on offroaders) Link to comment Share on other sites More sharing options...
TheLoyale Posted April 13, 2012 Author Share Posted April 13, 2012 As you can see here, the wheel bead is sunken into the tire more, so there is more rubber sidewall to protect the rim from rocks ect. Also like this, the wheel is a 15x7 but it is a 10.5" wide tire. You can also run a 12" wide on the same 15x7 wheel. Link to comment Share on other sites More sharing options...
987687 Posted April 13, 2012 Share Posted April 13, 2012 It's also a royal pain in the butt trying to mount a tire that's considerably thinner than the rim. After dealing with that a few times while working at a garage, I started refusing to do it. It was a lot of VW crowd wanting sidewall stretch... sigh... Link to comment Share on other sites More sharing options...
TheLoyale Posted April 13, 2012 Author Share Posted April 13, 2012 Eww, why? I like a tire with nice sharp square lines. Stretched sideways give me the hebbie jebbies.. Link to comment Share on other sites More sharing options...
987687 Posted April 13, 2012 Share Posted April 13, 2012 Eww, why? I like a tire with nice sharp square lines. Stretched sideways give me the hebbie jebbies.. Because STANCE I don't get it... merely relating what I've dealt with working at a shop. Link to comment Share on other sites More sharing options...
O.C.D. Posted April 13, 2012 Share Posted April 13, 2012 VW=Stretched tires and Hellaflush. Just the culture. Link to comment Share on other sites More sharing options...
TheLoyale Posted April 13, 2012 Author Share Posted April 13, 2012 VW=Stretched tires and Hellaflush. Just the culture. I could think of a few better things to do with a VW Link to comment Share on other sites More sharing options...
987687 Posted April 13, 2012 Share Posted April 13, 2012 I could think of a few better things to do with a VW They're good for rallyx, and with good suspension and tires they handle pretty nice. Same goes for hondas and all the other ricer mobiles. Link to comment Share on other sites More sharing options...
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